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Windows 7: DDR2 Not Detected in BIOS/Windows 7

06 Nov 2012   #1

Windows 7 x86
DDR2 Not Detected in BIOS/Windows 7

Hello Everyone!

I recently purchased a DDR2-667/PC2-5300 memory module to upgrade my Asus notebook RAM (X50RL) from 1 GB to 2 GB but it seems like the BIOS (during startup) and Windows 7 (My Computer) are not detecting the additional RAM. I tried the following tests to ensure the memory modules and slots are working fine.
1. Put in the "old" 1 GB ram in the unused slot and it loaded windows.
2. Put in the "new" 1 GB ram in the unused slot (after removing the old one) and it loaded windows.

So i believe that the memory modules work fine when installed individually in both slots, but one of them does not show up when both of them are installed together.

I then installed the CPU-Z to check and to my surprise the memory shown over there is 2GB and both memory modules are showing up in each of the slots (1 & 2). The only difference I saw was the CAS# Latency for JEDEC #3 is empty for the second slot (new memory module) and same applies for the RAS# Precharge under AMP.

Could you please help me out in identifying what is wrong and how can this be fixed to get full usage of the RAMs.

Attaching images for further reference.

Thanks & Regards,

Attached Images
My System SpecsSystem Spec


 DDR2 Not Detected in BIOS/Windows 7

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